Application of a biomedical hardware-software complex for the study of ultradian rhythms by heart rate variability

The article presents the results of the study of ultradian rhythms by amplitudes (A) and periods (T) of spectral characteristics (HF, LF, VLF, ULF) of the heart rate variability method using the HOLTERLIVE software package in ISCIM6.0 statistical processing in men, participants in a trans latitudinal flight and landing on the Arctic islands. The analysis of THF and TLF of the shows the symmetry and stability of adaptive reactions, while the range of ultra-slow (TVLF) and ultra-slow (TULF) waves shows the asymmetry and instability of the adaptive processes of the body of participants in a trans-latitude flight and landing on the Arctic islands. The transitions of the amplitude (A) and periods (T) of the power of harmonics from symmetry to asymmetry revealed in the examined people characterize the transitional states in the regulation's control of the heart rhythm.